Electric smelting-furnace.



G. E. WILSON.

ELECTRIC SMELTING FURNACE.

APPLIGATIOH FILED JULY 30, 1908.

30' In carryin'g. out" my invention 1 melting ieeeptaclemr crucible A wich' ma ensures Watson? 6 W; t l

i an it i vsai essmas mam Nq. 921,82M

Specification of Leatherette? 1 reteste ma n. mom-"- A 'jsucaumi w as,so, 190s; s m non-140,002.

, To aZMqhbm-ttmay whcemL y it knownthatl, CHARLES E. WILSON, a c t-teenof the United States, residin at Hood R ver, county ofllood River, anState of 5 Ore on-, have.invented,a certain new and useful, gnprovenlentin Electric smelting-Fur naces,- 0f whlchithe following is a specificaiw s r My-Jnvention relates to a new anduseful improvement i-naelectricsmelting furnaces A generallyand more particularly to such furnaces asaretused for the reduction of term titanium in steel-foundries and hasfor its ob ect to. rovide, an exceedmgly simple and evice 1 of thischaracter in ,which the air-would be prevented from entering thecrucible. With these-ends in" view, this invention consists in thedetails of construction and combination :of elements hereihafter setforth andjthen specifically desi ated by the clain'is.

l In o1der-that those s ledlifi the art to which this; invention a.pertains may understand how to make an use the same, I will "describeits construction in detail, referring bywletter toi--the accompanyingdrawln forming a art of this Specification, in whithefigurennthedra'wing 1s a view partly in section and partly inelevation.

rovide a beef any desired shape or size which isbui t of chrome bricks Band carbon C, and around these placed-- a metallic plate D. The

4 sides ofthe crucible are built on'an an le so I "tgt'the -lowerportion of said cruci le is aller'than then: per, and'leading from thevlowerIpiortiOm-t ereof is an opening E abouttthe outer-end of which isplaced a 4g chute F leading to the *latlle (it.

'OnTBGp of the crucible is placed a suitable wittel cooled' jacket Hthrough which are formed suitabldopemngs I to allow the electrodestopass in the crucible A as will be hereinafter described. Throu hyone ede is formed another hole'J in-whidh isfitte the valve K against whichresents valve L. Between the openings I is formed another opening Mintowhich leads the screw conveyer N above which is secured a holpper O1 into which may be placed the materia which the conveyer is to carryinto the crucible A.

P indicates tubes bolted to the water cooled jacket above the openings Iand formed with carried to the foundry. It is advisable to the upperends are the flangesQ and about these tubes P are piacedthej tljbQSLHhaying inwardly extendin flanges is whiclf-enga with the flanges formedonlthe tu'bes I These flanges S are adaptefistefit over-chase againstthe outside ofthe tubesiFP so-zisito prevent any air fromenteringi 'saidtahcsand insulating material P issf aced betweemthe tubes P and thejacket vin-orderstoprevent the. short circuitirng the ciirrent. Theelectrodes T are adapted-d c pass throu h these tubes into thecrucibleu-A amtlare'he' d securely to the 11 per tubes-R b ,itl'a'eri'n'ggU which is clampet aroundtheie ectrpdes'ta'nd secured together bythe bolts fUT Ofitlie lower part of these rin s-aieifortned flanges V bymeans of which t eyn-maybe-claniped to the tube R b the bolts-V. Formedwith or secured to t 1e rings.U-'are tlie eye-'W to which are securedthe chitins W ieaad chains being carried by the movable carriagefi. A reresents an openiiearthfuirlaoe in which t e'steel isprepared beforeenteri ti the crucible A of the electridftirhhcean' leading from thisopen hearth is a chute B the outer end oi vt'h-iclris iif. rcx imity tothe valve'L =so that when'isaie valve is raised the steel -willbe-allowed to run through the openiiig'd into thecrqct bi A i A Z a Htuft: utili Iii ractice the mix'ti'li'e is 'criisll'edifiitll it is-aout like coarse sand well mfxed sad heated to-a red heat their it is'plabedinthe hopper O and by tu'rnia thssmew; oifiveyer N it willcarry'thkeuni-ziturefihto the crucible A. The electric cui'ienb'is then turnedon tothe uectreaewrwuasuwhen once reduce the mix-tire ahtl 'slioflildthe gases from the reducti'biibf dritsaccfupin late in the crucible iili tilltiliei fpries tfrefih raised suflicient to liftth i tiliestiidfallow the gases to escape whefl' it-fsiil ficiefltfitiitdunt oftitanium has been i'edllcd 't lief'va lye Ti's i opened and the steelalldwedftwifun .f idm the open hearth furnace Ad toWhefiiruqible A 'atwhich time it will 'riiiiifhvith 'ti'ttlniu'in tir any d tlir 'alloiywlricliirriflh tdfil d liiced 'iii the crucible. hen the steel has hadtime to thoroughly mix with or take up the titanium it is tapped intothe ladle G and feed the mixture into the furnace very slowly so that nogreat variation in the temperature will be caused.

openings a second set of tubes slightly,

The reason for heatin the charge before placing it in the cruci e is toavold explosions the tem ature'berllfi so .h1gh that the least bit ofampiiess cause explosion which would wreck the furn JOf course the exactdetails of construction as these may be'varied without departing fromthe spirit of'm invention. I

Havin us fully. described my invention,

larger t an the first" named tubes and ads ted to slide u and down onthe outside oft e first name tubes, electrodes passing throu h saidtubes into the receptacle or crucib e,and means for raising or loweringsaid electrodes or removing them altogether, as and forithe pu ose setforth.

2. In a device 0 the character described,

a melting receptacle or crucible the inner walls of which slant inwardtbward the bottom, a water cooled jacket having suitable openings formedtherein placed on top of said melting receptacle or crucible, a screwconveyor leading to one of the openings, a hop 1' secured above saidscrew conveyor in w ich the mixture is adapted to be placed, a valveplaced overone of said openings, tubes placed over a number of theopcnin s, a second set of tubes slightly larger than t 1e first namedtubes andadapted to slide up and down on the outside of the first namedtubes, electrodes adapted to pass throu h the tubes into the receptacleor crucib e,

rings ada ted to be clamped about the up per end 0 said electrodes,means for clamping s'aid rings to the up or tube, and means for movingthe upper tu e up and down, as and for the pprpose t forth.

3. In a device of t e character described, a melting receptacle orcrucible the inner walls of, which slant inward toward the bottom, awater cooled jacket having suitable openings formed therein placed'ontop of said melting receptacle 0;, crucible, a screw conveyor leading tooneof the .OPQIllIlgS, a

I do not wish to be limited to -valve ior conveyi hopper secured abovesaid screw conveyor in which the mixture is adapted to be placed,

a valve placed over one of said openings, tubes placed over a number ofthe openings, a second set of tubes sli htly larger than the first namedtubes and adapted to slide up and down on the outside of the first namedtubes, electrodes adapted to pass through the tubes into the receptacleor crucible, rings adapted to be clamped about the upper end of saidelectrodes, means for clamping said rings to the upper tube, eyes formedwith or secured to the rings, a movable carriage, chains secured to saidmovable carriage and to the eyes formed with or 50'- cured to the ringsso that the electrodes may be moved up and down or entirely removed fromthe receptacle or crucible, and means for supp] ing the receptacle orcrucible with steel, as shown and described.

4. In adevice of the character described, a melting receptacle orcrucible the inner walls of which slant inward toward the bot- ,tom, awater cooled jacket having suitable tubes placed over a number of theopenings,

a second set of tubes slightly larger than the first named tubes andadapted to slide up and down on the outside of the first named tubes,electrodes adapted to pass through the tubes into the receptacle orcrucible, rings ada ted to be clamped about the upper end 0 saidelectrodes, means for clamping said rings to the upper tube, eyes formedwith or secured to the rings, a movable carriage, chains secured to saidmovable czii'i iage and to the eyes formed with or secured to the ringsso that the electrodes may be moved up and down or entirely removed fromthe receptacle or crucible, an open hearth furnace placed above thecrucible or receptacle at one side thereof, and a chute leadm from theopen hearth furnace to the the steel from the 0 en hearth furnace to te'receptaclc or cruci 1e, as shown and described. a

In testimony whereof, I have hereunto afiixed mysignature in thepresence of two subscribing witnesses.

CHARLES E. WILSON. Witnesses:

J. M. Cummn'rson, W. B: HAYES.

